The topic of marriage had come up in recent interviews and Demi told a New Zealand radio station: "I am very, very in love with him. I think - we will probably wait a little bit longer, but—if he asked tomorrow I would say yes."

Meanwhile, the split comes at a tough time for Demi whose great grandmother, who she calls Mimaw, died last week.

She attended her funeral on Friday and shared a picture of them together on Instagram with a heartbreaking post.

A post shared by Demi Lovato (@ddlovato) on May 29, 2016 at 6:02pm PDT

She wrote: "This morning I lost my world and the world's most special woman. I miss her more than words can even describe.

"The pain I feel is almost unbearable but because of her strength I will power through it.

"The love and support I have received has been empowering and so special to me..I love all of you so much and I am forever grateful for the prayers, texts and fan art my Lovatics have made me. Thank you."

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